It checks whether the machine is online

Add it to your pom.xml:

<project>
  <build>
    <plugins>
      <plugin>
        <groupId>com.yegor256</groupId>
        <artifactId>jping-maven-plugin</artifactId>
        <version>0.0.2</version>
        <executions>
          <execution>
            <goals>
              <goal>jping</goal>
            </goals>
            <configuration>
              <fileName>${project.build.directory}/we-are-online.txt</fileName>
              <propertyName>we-are-online</propertyName>
              <propertyValue>true</propertyValue>
              <failWhenOffline>false</failWhenOffline>
              <url>https://www.google.com</url>
              <connectTimeout>1000</connectTimeout>
              <readTimeout>1000</readTimeout>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

It runs, by default, at the initialize phase and checks whether the machine is connected to the Internet or not (by making a test HTTP connection to the url specified). If the connection is alive, the value of the we-are-online property will be set to true. Otherwise, the property will not be set.

Also, if the machine is connected to the Internet, a file will be created, as specified in the fileName configuration parameter. If the machine is offline, the file will be deleted (if it exists).

How to contribute?

Fork the repository, make changes, submit a pull request. We promise to review your changes same day and apply to the master branch, if they look correct.

Please run Maven build before submitting a pull request:

$ mvn clean install -Pqulice